«Red fox agate» from Patagonia, Argentina
Midge included in amber from the Baltic coast, polarised light
Two-phase inclusion in amethyst, Brazil
Inclusions of rutile (dark crystal and fine needles) and clusters of zircon grains in umbalite garnet, Tanzania
Inclusions of rock crystal and rutile needles in quartz, Brazil, polarised light
Natural etching structure on a crystal face of diamond (trigons), polarised light
Spinel crystal in dolomite marble, Burma
Inclusion of apatite in ruby from Tanzania
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